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City briefing

Lockport

Illinois, United States · 26,000 people
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
The year’s records
Annual mean 11°C · wettest around May · prevailing wind SW
Warmest
27.8 °C
Coldest
-2.7 °C
Wettest
70%
Windiest
5.7 m/s
Prevailing
SW
4.6 m/s average

When this place is good five ratings · thirty-six ten-day sections · click a cell to read it

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
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Nov
Dec

Every reading

bars actual · line feels-like, °C
-15-10-5051015202530JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember-15-10-5051015202530JFMAMJJASOND

The average temperature in Lockport over the whole year is 11°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -5°C.

Month by month Lockport climate by month: average temperatures year round · click a month to read it

MonthHighLowFeels likeChance of rainCloudWindBeing outsideSunWalking
January-2°C-5°C-8°C50%64%4.1 m/s002
February2°C-3°C-4°C51%52%4.2 m/s109
March7°C2°C2°C56%55%4.4 m/s4022
April13°C6°C8°C51%53%4.3 m/s20146
May20°C13°C17°C56%50%3.7 m/s501558
June26°C19°C25°C53%40%3.3 m/s554133
July27°C21°C28°C54%40%2.7 m/s435715
August27°C19°C27°C54%39%2.6 m/s495320
September24°C16°C23°C54%39%2.9 m/s633445
October16°C9°C13°C55%48%3.4 m/s37559
November8°C3°C3°C52%50%3.8 m/s7027
December2°C-2°C-4°C54%59%3.9 m/s007

High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.

Seasons, and the year in short Lockport weather by season

Year round, Lockport has days of about -2°C at their warmest in January, its coolest month, and 27°C in July, its warmest; the coolest hours of the day run from -5°C to 21°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around May and least likely around January. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.

Lockport weather in winterDecember to February

High 1°CLow -3°CRain 52%

Winter in Lockport has typical daily highs of about 1°C and lows of about -3°C, with a 52% chance of rain on a given day.

Lockport weather in springMarch to May

High 13°CLow 7°CRain 54%

Spring in Lockport has typical daily highs of about 13°C and lows of about 7°C, with a 54% chance of rain on a given day.

Lockport weather in summerJune to August

High 27°CLow 20°CRain 54%

Summer in Lockport has typical daily highs of about 27°C and lows of about 20°C, with a 54% chance of rain on a given day.

Lockport weather in autumnSeptember to November

High 16°CLow 9°CRain 54%

Autumn in Lockport has typical daily highs of about 16°C and lows of about 9°C, with a 54% chance of rain on a given day.

When is the rainy season in Lockport?

Lockport has no sharply defined rainy season: the chance of rain on a given day runs from 50% in January, the driest month, to 56% in May, the wettest.

What time of year is Lockport windiest?

Winds in Lockport are highest in March, averaging 4.4 m/s (16 km/h), and lightest in August, at 2.6 m/s (9 km/h). The prevailing wind is from the SW.

What is the average temperature in Lockport year round?

The average temperature in Lockport over the whole year is 11°C. July is the hottest month, with highs of about 27°C; January is the coldest, with lows of about -5°C.

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